I am designing a cooling system for my computer and had a few questions.
So I have a computer water cooling radiator and I want to cool it as much as I can.
My first two ideas were an old window A/C unit and blowing air over the cold radiator in there onto my radiator. Or put the whole radiator again in water and fill the water with ice indefinetely...
My next idea, which I am going to pursue, is to set dry ice on the radiator. Or to submerge the radiator in some sort of liquid with a low freezing point (acetone?) and get that liquid as cold as I can by sublimation the dry ice in it.
Using the acetone is a good idea because it can grab all the cold from the dry ice (surface area is covered by liquid; opposed to it just sitting on the rad and 3/4 of the dry ice is incontact with the air doing nothing) But I am not sure how well my radiator would stand up to being submerged in acetone (not to mention explosions...)
So what would be my best bet to using the dry ice to chill the water? How do I calculate how much I need for the amount of watts in the watter?
I know my water cooling loop must remove about 625watts at max computing power, so how much dry ice do I need to remove that amount of heat?
I think setting dry ice on it works well (have done it before) but I am scared of local freezing inside the radiator, and that ice hitting my pump impellor then (no-no). Also if I get the water too cold I will start to get condensation on some parts (no-no).